Supplemental air valve



April 1 v1924.

1,488,506 F. s. MQATEE SUPPLEMENTAL AIR VALVE Filed sept. 1er- 1.922

ws #Si III Y n E W A /y a i N O N QU gwum'atoz x WwW/11%' Patented Apr,l, 1934,

UNITED STATES FRD S. MGATE'E, OF LINCOLN, NEBRASKA.

SPPLEMENTL AIR VALVE.

Application filed September 19, 1922. Serial No. 589,164.

To all whom it mag] concern Be it known that I, FRED S. MoA'rnn, acitizen of the United States, residing at Lincoln, in the county ofLancaster and State of Nebraska, have invented certain new and usefulImprovements in Supplemental Air Valves, of which the following is aspecification.

The device relates to air valves and has as an object the provision of asupplemental valve to allow air to enter the intake mani' fold of agasoline engine when the speedof the air flowing through the manifoldproduces suction of a predetermined amount. A further object of theinvention is the provision of a valve of the class described which willallow a graduated amount of air to enter, increasing as the suctionincreases.

An illustrative embodiment of the invention is shown in the accompanyingdrawing, in which the ligure is a vertical longituf dinal sectionthrough an embodiment of the invention', the parts being shown inelevation.

As shown, the device comprises a tubular body l of general T outlinehaving a valve chamber 28 therein, and a projection 11 screw threaded,as at 12, which is adapted to be screwed into an opening in an intakemanifold. The branch 13 of the T is shown as internally screw threadedand provided with a plug 14. The opening closed by the plug 14 isprovided for the purpose of machining the valve seat 15.

The valve seat 15 and its coacting valve 16 are shown as provided withco2-acting surfaces each comprising a portion of a sphere. Projectingfrom the valve head 16 there is shown a stem 17, perfo-rated as lat 18,for engagement with a spring 19y adapted to hold the valve to its seat.

To provide an ancho-rage for the spring 19 there is shown a projection20 from the body 10, having an upturned extremity 21 perforated andscrew threaded for the reception of an anchor 22. The anchor screw 22 isshown as perforated at 23 for engagement with the remaining end of thespring 19.

To hold the screw 22 in adjustment, a look nut 24 is preferably providedand the head 25 of the screw is shown as slotted at 26 for engagement bya screw driver. To adjust the tension of the spring 19 the lock nut 24may be loosened and the screw 22 turned in the portion'20 so astoprovide the desired tension upon they spring.

`It may be desirable to supply hot air by means of the device. To thisend a pipe 27, shown in dot and dash lines, may be slipped over theprojection 20 into engagement with the body l0 of the device, which pipemay leadto a stove about the exhaust manifold of the engine. v

l The lSpring 19 is preferably so adjusted as to tension that the devicewill only operate when the engine is turning at a high speed, underwhich condition the suction of the air passing rapidly through thecarburetor usually draws more gasoline than is correct for the load uponvthe engine. At this point in the operation of the engine the tension ofthe spring 19 will be overcome and the valve 16 will open to allowsupplemental air to enter the intake manifold. The amount of air thusallowed to enter will be graduated in accordance with the speed of theair into the intake manifold and the consequent suction exerted thereby.

Minor changes may be made in the physical embodiment of the inventionwithout departing from its spirit.

vI claim: y

1. A supplemental air valve comprising, in combination, a body having avalve chamber, a tube projecting from said chamber adapted to beconnected with the intake manifold of an internal combustion engine, awall of said chamber having an opening therein surrounded by a valveseat, an inwardly o-pening valve coacting with said seat and havingastem projecting through said opening, an anchor supporting projectionintegral with said body, an anchor supported by said projection,ajtension spring anchored to said anchor and said valve stemV andadapted to retain said valve normally -in a branch opposite said screwplug, a

valve cooperating with said seat and having a stem projecting throughthe valve opening, an anchor supporting projection integral with saidbody, an angularly projecting eX- tremty upon said projection, an anchorin screw `threaded engagement with said extremity, a. tension springengaging said anchor and said valve stem whereby the valve stem will beyieldingly held upon its seat.

3. A supplemental air Valve comprising, in combination, a. body ofgenerally T form having a Valve chamber therein and a tubular projectionadapted to be placed in communication with the intake valve of an in-,ternal combustion engine, arsorew plug engaging one brunch ofsaidvbody, a valve seat in a branch opposite said'screw plug, a. valve`convey vheated air to said Valve.

cooperating with said seat and having a, stern Yprojecting*through thevalve opening, an anchor supporting projection integral with. said body,an singularly projecting extremity upon seid projection, an nchor inscrew threaded engagement with said eX- tremity, a tension springengaging said anchor and said Valvestem'wbereby the valve stem will beyieldingly held uponits seat, and a pipe surrounding said anchoringprojection and engaging `said body adapted to FRED s. MGATEE.

